(feeler) bolt on spare tire gas can carrier.

[Kyle]

i wanted to start this as a thread to see if there is any interest in a bolt on spare tire jerry can holder. Anyone might be interested?

 

[spillKill]

Got any pics? And what price you thinking.

 

[Portager]

Just curious. Do you need to extend your range or do you like the looks of hanging Jerry cans on the back?

Personally I'd be concerned about hanging that much extra weight on the spare tire mount, but if they are only for looks, then the empty cans don't weight that much.

 

[spillKill]

I have a hi lift jack mounted to my spare

 

[SuperBuickGuy]

Just curious. Do you need to extend your range or do you like the looks of hanging Jerry cans on the back?

Personally I'd be concerned about hanging that much extra weight on the spare tire mount, but if they are only for looks, then the empty cans don't weight that much.

I wouldn't be concerned. I've had my hi lift on that tire; the jerry can; 50 lbs worth of bikes; and skis.... it's pretty stout .... oh and I've stood on the spare tire

 

[4speedfunk]

More truck or less hobbies.

 

[Kyle]

Got any pics? And what price you thinking.

nothing as of yet i just wanted to throw some feelers out to see how many people would be interested!

 

[Kyle]

Just curious. Do you need to extend your range or do you like the looks of hanging Jerry cans on the back?

Personally I'd be concerned about hanging that much extra weight on the spare tire mount, but if they are only for looks, then the empty cans don't weight that much.

both looks and functionality. and i dont think weight will be an issue ive stood on top of the spare tire and it didnt budge at all.

 

[ArtHummer]

Yea, this is kind of off-topic but, how much weight the spare tire bracket can hold? I was camping the other day and we got a spot without any good couple of trees for the hammock. I thought about backing up to a one of the threes and use the spare tire as a second hook up point. But after some thinking I decided to bailout on that idea. I was afraid that it would not hold a 185 lb... and my brother is 220

 

[06 H3]

Recon runs a 40 on the stock carrier, right?

Maybe he can chime in

 

[frumaker]

I have not had any issues with weight and I keep gas in those all the time


FRU

 

[evldave]

I think they would be fine as long as the door was closed - the door, when opened, will have a lot of stress on the hinges and that would concern me.

When I had my spare on, I used the tire as a step all the time, but the few times I tried stepping on the tire (or my jerry can mount) with the door open, I could easily feel the hinges flexing. Your mileage may vary, but I'd just say be careful having jerry cans on there with the door open, and be extra careful opening the door on an uphill slope

 

[digglesworth]

 

[digglesworth]

I forget where I found that pic but another good option.

 

[spillKill]

View attachment 12433

That is the set up I am trying to get with the jerry cans on the outside with jack on the spare

 

[digglesworth]

I forget the name of these cans but they have their own mounting system. They are pretty expensive from what I remember. Supposed to be leak-proof. I'm pretty sure that's a custom setup. Looks like the base could easily made with a welder and the right tubing. You'd just have to find a way to adapt it to the spare carrier...

 

[ABNTROOP]

Those would be Rotopax (http://rotopax.com/) and where do I get a spare tire mount for rotopax like that??

 

[SuperBuickGuy]

Yea, this is kind of off-topic but, how much weight the spare tire bracket can hold? I was camping the other day and we got a spot without any good couple of trees for the hammock. I thought about backing up to a one of the threes and use the spare tire as a second hook up point. But after some thinking I decided to bailout on that idea. I was afraid that it would not hold a 185 lb... and my brother is 220

You sleep with your brother? TMI

 

[digglesworth]

Those would be Rotopax (http://rotopax.com/) and where do I get a spare tire mount for rotopax like that??

I wish I knew... But I'm thinking it was a custom job. If I could find a spare tire carrier at the junkyard for CHEAP, it might be worth a shot taking a case of beer to one of my welding buddies... My project budget is non-existant at this point... Rotopax makes universal mounts I believe that can be mounted to roof racks and such...

 

[Portager]

I wouldn't be concerned. I've had my hi lift on that tire; the jerry can; 50 lbs worth of bikes; and skis.... it's pretty stout .... oh and I've stood on the spare tire

That is interesting, but not as much proof as you might think.

In dynamic loading conditions we convert the static load to an equivalent quasi-static load by multiplying the static load by an G load to produce an equivalent loading condition. I went and talked to some of the structural engineers at my work to get a questimate of the g loading they would apply to an off road vehicle. First they said that the g load was lower between the axles and higher at the ends of the vehicle and lower on the seats than on the floor. They said it would be even higher for a cantilevered structure like the spare tire mount. One engineer said his brother races off road vehicles and they instrumented a vehicle and came up with a 20g load factor. That means that a mass cantilevered behind the back bumper would apply an equivalent load equal to 20 times its own mass. He thought for the slow rock crawling type offroading that we do, a reasonable quasi-static load factor would be 5g to 10g depending on who is driving.

So for the stock adventure model (offroad package) wheels and tires (i.e. 33" A/T tires and aluminum wheels) you would have 56 lb tires and 21 lb rims or 77 lbs total. Now, assuming that GM/Hummer designed the spare tire mount for 10g (ID10T driver) worst case that would mean that they may have designed the spare tire mount to support a 770 lb quasi-static load. So if you put all your weight on the spare with the vehicle at rest that would be about 262 lbs which would be equivalent to 3.4g quasi-static load. Now if you want to know if the designers used a >=5g factor, get a 300 lb guy to hang on your spare. For 10g you just need to hang 693 lb on your spare.

I don't know about your wheels, but mine weigh about 104 lbs each (35" Cooper STT's @ 64 lbs + Hutchinson Double beadlocks @ 40.5 lbs). Steel NATO Jerry cans weigh 9.46 lbs each and hold 5.28 US gallons at 6 lbs/US gallon equals 41 lbs per full Jerry can. So, one of my wheels plus 2 full fuel cans would be 186 lbs. So, as long as I reduce the quasi-static load factor to <4.14g I should be okay.

I think anyway you look at it you're eating into the design margins of the original design. The best case is you look cool and someday you might actually use the extra gas. The worst case is you over stress the hinges or the door frame and bend the structure to the point where the door won't open or close. Personally, I wouldn't take that risk until I had seen someone do it with their vehicle and survive multiple rough offroading trips.

 

[ReconH3]

I've been running 40" tire with dual bead locks that weigh so much I can't lift it by myself. The tire carrier and tailgate can handle it no problem. I've even been offloading with it on and no problem. I eventually got rid of it, not because it couldn't handle it, but because it really threw the center of gravity way off. On steep climbs it would make the truck want loft the front wheels.


"Ex Umbris Venimus"

 

[Kyle]

I have not had any issues with weight and I keep gas in those all the time


FRU

did you build that?

 

[frumaker]

did you build that?

Yes I did. I got the can holders from summit racing for around $25 each. I got the cans from Solidusj. And then I had metal lying around that I built the frame out of. It bolts on behind the spare tire carrier using the stock bolts for the spare tire carrier.

A side note, I built this to fit snug to my spare which is a 33". When the back door is open, the driver side carrier rests against the tail light which I'm ok with but if you run 35's, the set up I did will not work.


FRU

 

[digglesworth]

I'd like to see one with a jerry can on the passenger side and a hi-lift on the drivers side... That might provide enough clearance not to hit the tail light when the door is open...

 

[RamRod]

What he said...


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